78492533 has 4 divisors (see below), whose sum is σ = 89705760. Its totient is φ = 67279308.

The previous prime is 78492529. The next prime is 78492541. The reversal of 78492533 is 33529487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78492533 - 2² = 78492529 is a prime.

It is a super-2 number, since 2×78492533² = 12322155473512178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78492563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5606603 + ... + 5606616.

It is an arithmetic number, because the mean of its divisors is an integer number (22426440).

Almost surely, 2^78492533 is an apocalyptic number.

It is an amenable number.

78492533 is a deficient number, since it is larger than the sum of its proper divisors (11213227).

78492533 is a wasteful number, since it uses less digits than its factorization.

78492533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11213226.

The product of its digits is 181440, while the sum is 41.

The square root of 78492533 is about 8859.6011761253. The cubic root of 78492533 is about 428.1633089346.

The spelling of 78492533 in words is "seventy-eight million, four hundred ninety-two thousand, five hundred thirty-three".